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video: ARM CLCD: use panel device node for getting backlight and mode

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Having obtained panel device node in clcdfb_of_init_display() it allows to
generalize and simplify two more helper functions clcdfb_of_get_backlight()
and clcdfb_of_get_mode().

Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
This commit is contained in:
Vladimir Zapolskiy 2017-01-30 17:39:48 +01:00 committed by Bartlomiej Zolnierkiewicz
parent be7367968f
commit 6306b3a58c
1 changed files with 5 additions and 15 deletions
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20
drivers/video/fbdev/amba-clcd.c
View file

@ -624,16 +624,11 @@ static int clcdfb_snprintf_mode(char *buf, int size, struct fb_videomode *mode)
mode->refresh);
}
static int clcdfb_of_get_backlight(struct device_node *endpoint,
static int clcdfb_of_get_backlight(struct device_node *panel,
struct clcd_panel *clcd_panel)
{
struct device_node *panel;
struct device_node *backlight;
panel = of_graph_get_remote_port_parent(endpoint);
if (!panel)
return -ENODEV;
/* Look up the optional backlight phandle */
backlight = of_parse_phandle(panel, "backlight", 0);
if (backlight) {
@ -646,19 +641,14 @@ static int clcdfb_of_get_backlight(struct device_node *endpoint,
return 0;
}
static int clcdfb_of_get_mode(struct device *dev, struct device_node *endpoint,
struct clcd_panel *clcd_panel)
static int clcdfb_of_get_mode(struct device *dev, struct device_node *panel,
struct clcd_panel *clcd_panel)
{
int err;
struct device_node *panel;
struct fb_videomode *mode;
char *name;
int len;
panel = of_graph_get_remote_port_parent(endpoint);
if (!panel)
return -ENODEV;
/* Only directly connected DPI panels supported for now */
if (of_device_is_compatible(panel, "panel-dpi"))
err = clcdfb_of_get_dpi_panel_mode(panel, clcd_panel);
@ -791,11 +781,11 @@ static int clcdfb_of_init_display(struct clcd_fb *fb)
return err;
}
err = clcdfb_of_get_backlight(endpoint, fb->panel);
err = clcdfb_of_get_backlight(panel, fb->panel);
if (err)
return err;
err = clcdfb_of_get_mode(&fb->dev->dev, endpoint, fb->panel);
err = clcdfb_of_get_mode(&fb->dev->dev, panel, fb->panel);
if (err)
return err;